Manhattan and Old Fashioned drinkers, this one's for you. Almost a century ago, a bartender at The Swan Room in New Orleans couldn't have realized how perfectly he was mixing together the cultures of his city in a single glass. French brandy and liqueur, Italian vermouth, American whiskey and New Orleans bitters came together to make a drink the International Bartenders Association calls one of its "unforgettables". After your first, I'm sure you'll agree.